Have you run the windows memtest utility or any non-OS diagnostic utilities? Have you fiddled with the Startup and Services programs in the msconfig utility?
Few weeks ago I changed RAM in the computer, formatted disk, installed new Windows 7 64bit. Few days it was OK, then I installed several programs and system started freezing in some situations. First it happened often in Firefox, now rarely. Sometimes in certain 2D games it happens. When I run tabletop game in roll20.net site it is freezing all the time. Freezes take about 3-4 seconds.
I tested disk and memory for errors on another forum, did antivirus scans and sent some reports to people to fix viruses manually, nothing helped. What to do?
Hijackthis: http://wklej.org/id/1695350/

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